NAME
Search::Elasticsearch::CxnPool::Async::Static::NoPing - An async CxnPool for connecting to a remote cluster without the ability to ping.
VERSION
version 6.80_01
SYNOPSIS
$e = Search::Elasticsearch::Async->new(
cxn_pool => 'Async::Static::NoPing'
nodes => [
'search1:9200',
'search2:9200'
],
);DESCRIPTION
The Async::Static::NoPing connection pool (like the Async::Static pool) should be used when your access to the cluster is limited. However, the Async::Static pool needs to be able to ping nodes in the cluster, with a HEAD / request. If you can't ping your nodes, then you should use the Async::Static::NoPing connection pool instead.
Because the cluster cannot be pinged, this CxnPool cannot use a short ping request to determine whether nodes are live or not - it just has to send requests to the nodes to determine whether they are alive or not.
Most of the time, a dead node will cause the request to fail quickly. However, in situations where node failure takes time (eg malfunctioning routers or firewalls), a failure may not be reported until the request itself times out (see "request_timeout" in Search::Elasticsearch::Cxn).
Failed nodes will be retried regularly to check if they have recovered.
This class does Search::Elasticsearch::Role::CxnPool::Static::NoPing and Search::Elasticsearch::Role::Is_Async.
CONFIGURATION
nodes
The list of nodes to use to serve requests. Can accept a single node, multiple nodes, and defaults to localhost:9200 if no nodes are specified. See "node" in Search::Elasticsearch::Role::Cxn for details of the node specification.
See also
Inherited configuration
From Search::Elasticsearch::Role::CxnPool::Static::NoPing
From Search::Elasticsearch::Role::CxnPool
METHODS
next_cxn()
$cxn_pool->next_cxn->then( sub { my $cxn = shift });Returns the next available node in round robin fashion - either a live node which has previously responded successfully, or a previously failed node which should be retried. If all nodes are dead, it will throw a NoNodes error.
Inherited methods
From Search::Elasticsearch::Role::CxnPool::Static::NoPing
From Search::Elasticsearch::Role::CxnPool
AUTHOR
Enrico Zimuel <enrico.zimuel@elastic.co>
COPYRIGHT AND LICENSE
This software is Copyright (c) 2020 by Elasticsearch BV.
This is free software, licensed under:
The Apache License, Version 2.0, January 2004